Ball joint, smooth and backlash. The M3 Ball joint makers, we finished a very solid plastic with a very small percentage of Teflon. Therefore, the unsurpassed wear resistance. The ball is equipped with an approach as a mounting surface. Bore diameter of 3 mm. The hard-chrome ball is ideal for mounting in our power steering lever or levers. With this combination is a backlash and smooth power transfer, is possible even under extreme loads, the long term. Applications are model aircraft, jet models, helicopter models and car models.